Verbseoul.
regular
기이다giidato hide/conceal a fact from somebody

To say to hide/conceal a fact from somebody politely in the present tense, use 기여요 (gee-yuh-yoh). Below is the full conjugation of 기이다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
기여
gee-yuh
기여요
gee-yuh-yoh
기입니다
gee-eem-nee-dah
Past
기였어
gee-yuh-ssuh
기였어요
gee-yuh-ssuh-yoh
기였습니다
gee-yuh-sseum-nee-dah
Future
기일 거야
gee-eel- -guh-yah
기일 거예요
gee-eel- -guh-yae-yoh
기일 겁니다
gee-eel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
기이세요
gee-ee-sae-yoh
Suggestion / Let's Polite (요)
기여요
gee-yuh-yoh
Question Polite (요)
기여요?
gee-yuh-yoh-?
Connective “and” — (고)
기이고
gee-ee-goh
Conditional “if” — (면)
기이면
gee-ee-myuhn
Noun form — (기)
기임
gee-eem